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Iterative encoding of low-density parity-check codes
Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE, 2004Motivated by the potential to reuse the decoder architecture, and thus reduce circuit space, we explore the use of iterative encoding techniques which are based upon the graphical representation of the code. We design codes by identifying associated encoder convergence constraints and also eliminating some well known undesirable properties for sum ...
David Haley +2 more
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Low Density Parity Check Codes
2020A linear code with a check matrix in which each column has few non-zero entries is called a low density parity check code or, for brevity, an LDPC code. These codes were introduced in the 1960s by Gallager who proved that probabilistic constructions of such matrices produce asymptotically good linear codes. Moreover, he observed that LDPC codes perform
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Architecture-aware low-density parity-check codes
Proceedings of the 2003 International Symposium on Circuits and Systems, 2003. ISCAS '03., 2003A high-throughput memory-efficient decoder architecture for architecture-aware low-density parity-check (LDPC) codes is proposed based on a novel turbo-decoding algorithm. The architecture benefits from various optimizations at the code-design, decoding algorithm, and decoder architecture levels. The interconnect complexity and memory overhead problems
Mohammad M. Mansour, Naresh R. Shanbhag
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Low-Density Parity-Check Codes for ATSC 3.0
IEEE Transactions on Broadcasting, 2016In this paper, we introduce the overview and detailed structure of low-density parity-check (LDPC) codes, which are adopted for the physical layer standard of Advanced Television Systems Committee (ATSC) 3.0. As one of the features to mitigate channel errors efficiently, LDPC codes are used as a main part of forward error correction scheme within the ...
Kyung-Joong Kim 0002 +7 more
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Low Density Parity Check Codes
2015Low density parity check (LDPC) codes are forward error-correction codes, invented by Robert Gallager in his MIT Ph.D. dissertation, 1960. The LDPC codes are ignored for long time due to their high computational complexity and domination of highly structured algebraic block and convolutional codes for forward error correction.
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Weight Distribution of Low-Density Parity-Check Codes
IEEE Transactions on Information Theory, 2006We derive the average weight distribution function and its asymptotic growth rate for low-density parity-check (LDPC) code ensembles. We show that the growth rate of the minimum distance of LDPC codes depends only on the degree distribution pair. It turns out that capacity-achieving sequences of standard (unstructured) LDPC codes under iterative ...
Changyan Di +2 more
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Low-Density Parity-Check Codes
2013Low-density parity-check (LDPC) codes were introduced in 1960 by R. Gallager [1] in his Phd thesis. He already introduced the iterative method for decoding LDPC codes. However, also due to their computational and implementation complexity the iterative decoding was largely ignored.
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Low-Density Parity-Check Codes
2000Gallager first proposed low-density parity-check (LDPC) codes and their iterative detection algorithm in 1962 [Gallager, 1962]. They have been almost forgotten for thirty years. Recently, with the extensive research on “turbo-like” codes and on iterative detection, LDPC codes re-emerge as another category of random codes approaching the Shannon ...
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Low-density parity-check codes
IEEE Transactions on Information Theory, 1962openaire +2 more sources